1) A person who lacks intellect enough to make proper sense of even the basic things in life. This usually includes politicians, nerds, geeks and any other mentally or socially handicaped people.
2) People that cannot, or choose not to define things properly because they lack common sense.
1) George W Bush is a moron; that Nerd doesn't know what he's missing....moron.
2)Moron: Moron is the opposite of Lesson and has a similar meaning to Lessoff
Not-Moron: You have to be a moron to come up with that.